{"title":"A parallel guaranteed projector-camera system for dual videography","authors":"Yushi Yamagiwa, Hiroyuki Kubo","doi":"10.1145/3476124.3488621","DOIUrl":"https://doi.org/10.1145/3476124.3488621","url":null,"abstract":"Thanks to the optical duality between a projector and a camera, an image from the viewpoint of the projector can be computationally generated using camera images;however, to achieve dual photography in real time, the geometric configuration of the projector and the camera must be strongly constrained. In this research, to substantially relax this constraint, we improved the optical components of the projector–camera system by employing a stabilizer to guarantee that both epipolar planes are parallel. As a result, it is possible to move the projector to change the synthesized virtual viewpoint more freely in real–time.","PeriodicalId":199099,"journal":{"name":"SIGGRAPH Asia 2021 Posters","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133550649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Light Source Selection in Primary-Sample-Space Neural Photon Sampling","authors":"Yuta Tsuji, Tatsuya Yatagawa, S. Morishima","doi":"10.1145/3476124.3488639","DOIUrl":"https://doi.org/10.1145/3476124.3488639","url":null,"abstract":"This paper proposes a light source selection for photon mapping combined with recent deep-learning-based importance sampling. Although applying such neural importance sampling (NIS) to photon mapping is not difficult, a straightforward approach can sample inappropriate photons for each light source because NIS relies on the approximation of a smooth continuous probability density function on the primary sample space, whereas the light source selection follows a discrete probability distribution. To alleviate this problem, we introduce a normalizing flow conditioned by a feature vector representing the index for each light source. When the neural network for NIS is trained to sample visible photons, we achieved lower variance with the same sample budgets, compared to a previous photon sampling using Markov chain Monte Carlo.","PeriodicalId":199099,"journal":{"name":"SIGGRAPH Asia 2021 Posters","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122152243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How Can I Swing Like Pro?: Golf Swing Analysis Tool for Self Training","authors":"Chen-Chieh Liao, D. Hwang, H. Koike","doi":"10.1145/3476124.3488645","DOIUrl":"https://doi.org/10.1145/3476124.3488645","url":null,"abstract":"In this work, we present an analysis tool to help golf beginners compare their swing motion to the swing motion of experts. The proposed application synchronizes videos with different swing phase timings using the latent features extracted by a neural network-based encoder and detects key frames where discrepant motions occur. We visualize synchronized image frames and 3D poses that help users recognize the differences and key factors that can be important for their swing skill improvement.","PeriodicalId":199099,"journal":{"name":"SIGGRAPH Asia 2021 Posters","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114692586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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